Electro-spark alloying using graphite electrode on titanium alloy surface for biomedical applications

Tang, Changbin; Liu, Daoxin; Wang, Zhan; Gao, Yang

doi:10.1016/j.apsusc.2011.01.120

Cited by 104 publications

(33 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As a result, the decomposed elements formed oxides and carbides on the machined surface, which may expected to enhance the surface properties. In comparison with previous research findings, the increased surface hardness is associated with formation of TiC, TiO2 and ZrO2 like hard phases in recast layer [12,39]. The surface micro-hardness has been increased upto 1080 Hv as previously reported [39].…”

Section: Resultssupporting

confidence: 49%

“…In previous research findings, TiO2 [9,[38][39], SiO2, [39,43] ZrO2, [44], Nb2O5 [39,45] and TiC [12] like promising bioceramic oxides and carbide have been used for surface coating of implants to enhance its biocompatibility, hardness, wear and corrosion resistance. According to our previous results, PMEDM able to fabricate biomimetic nano-porous bioceramic layer on β-Ti implant surface, and shows excellent biocompatibility, and corrosion resistance.…”

Section: Resultsmentioning

confidence: 99%

“…EDM also alter the surface chemistry of Ti-6Al-4V alloy into oxides and carbides, which is favourable for boneimplant anchorage [11]. The capability of EDM to enhance the surface hardness, wear resistance, corrosion resistance and bioactivity of Ti-6Al4V alloy by surface alloying has been reported by bin et al [12]. Harcuba et al reported in his research that EDMed surface promotes cell adhesion on Ti-6Al4V alloy, but high surface roughness and crack density reduced the fatigue performance which results in clinical failure [13].…”

mentioning

confidence: 91%

See 2 more Smart Citations

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Prakash

Kansal

Pabla

et al. 2016

Materials and Manufacturing Processes

184

View full text Add to dashboard Cite

The present research is the first type of study, in which the application of powder mixed electrical discharge machining (PM-EDM) for the machining of β-phase titanium (β-Ti) alloy has been proposed. β-Ti alloys are new range of titanium alloys, which has wide spread application in dental, orthopaedics, shape memory, and stents. The aim of the present study is to fabricate submicro-and nano scale topography by PMEDM process to enhance the biocompatibility without affecting machining efficiency. The effect of Si powder concentration along with pulse-current and duration on the surface and machining characteristics has been investigated. A significant decrease in surface crack density on the machined surface with 4 g/l Si powder concentration was observed. When β-Ti alloy was modified at 15 A pulse-current, longer pulse interval with 8 g/l concentration of Si powder particles, the interconnected surface porosities with pore size 200-500 nm was observed. Moreover, at Si powder concentration of 2 and 4 g/l, the recast layer thickness is 8µm and 2-3 µm, respectively. Elemental mapping analysis confirmed that PMEDM also generated carbides and oxides enriched surface, a favourable surface chemistry to enhance the biocompatibility of β-Ti alloy. Furthermore, Downloaded by [George Mason University] at 06:41 22 June 2016 2 PMEDM also enhances the machining performance by improving MRR and reducing TWR.

show abstract

Section: Resultssupporting

confidence: 49%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 91%

See 1 more Smart Citation

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Prakash

Kansal

Pabla

et al. 2016

Materials and Manufacturing Processes

184

View full text Add to dashboard Cite

show abstract

“…In many cases, appropriate surface treatment, e.g., coating or laser impact, can significantly improve the functionality and sustainability of structural materials and constructions in corrosive, wearing and oxidization environments [1][2][3]. In addition to those long-known techniques, many new processes have emerged recently for surface modification (e.g., electro-spark alloying [4] and laser alloying [5]) all of which aim at further enhancing the functional properties of a wide range of materials. The present study extends the efforts of the authors in this direction by developing alternative methods for surface engineering [6].…”

Section: Introductionmentioning

confidence: 99%

Surface modification of an austenitic stainless steel wire by a multi-pulse treatment with a high-power electric current

et al. 2017

View full text Add to dashboard Cite

The skin effect caused by high-power electric pulses can be used for modification of the surface microstructure in metallic materials. The electric current pulses of high amplitude and short rapid surface heating followed by melting and rapid solidification due to heat exchange with the bulk. New high-current multi-pulse equipment was engineered and used for the surface modification of a stainless steel. The microstructure was investigated by transmission electron microscopy as a function of the distance from the surface. Rapid surface heating and high cooling rate caused drastic changes in the initial austenitic structure, amorphization of the surface layer and pronounced mechanical twinning in the subsurface region.

show abstract

“…Имеющиеся работы по ИЭО титановых сплавов демонстрируют возможность модифицирования поверхностных слоев с целью снижения в них концентрации алюминия и ва-надия [18]. Известна работа, посвященная полу-чению методом ИЭО на поверхности титаново-го сплава Ti-6Al-4V твердого износостойкого покрытия на основе TiC [19]. Авторами показана возможность улучшения закрепления клеток на поверхности имплантата без влияния на проли-ферацию клеток.…”

Section: Introductionunclassified

Peculiarities of formation of sintered electrodes of the Ti–Ti3P–CaO composition and their application in technology of pulsed electric-discharge machining of titanium

Логинов¹,

Левашов²,

Потанин³

et al. 2015

Izv. VUZ. Poroshk. Met.

View full text Add to dashboard Cite

Исследовано влияние механической обработки на структуру и фазовый состав порошковых смесей Ti-10%Ca 3 (PO 4 ) 2 . По тех-нологии прессования и вакуумного спекания получены керамические электродные материалы Ti-Ti 3 P-CaO с высокой одно-родностью компонентов и остаточной пористостью 5-7 %. Изучена эрозионная способность спеченного металлокерами-ческого электрода Ti-Ti 3 P-CaO при импульсной электроискровой обработке титановых подложек и проведено сравнение с электродами TiC 0,5 -Ti 3 PO x -CaO, изготовленными методом самораспространяющегося высокотемпературного синтеза. По-крытия, полученные при использовании электродов Ti-Ti 3 P-CaO и TiC 0,5 -Ti 3 PO x -CaO, характеризовались высокой сплошнос-тью, толщиной до 20 мкм, микротвердостью до 3,6 ГПа, шероховатостью 3,3-4,6 мкм, наличием и равномерным распределе-нием биоактивных элементов кальция и фосфора. 2015. No. 4. С. 45-58. DOI: dx.doi.org/10.17073/1997-308X-2015 Peculiarities of formation of sintered electrodes of the Ti-Ti 3 P-CaO composition and their application in technology of pulsed electric-discharge machining of titaniumThe influence of mechanical treatment on the structure and phase composition of Ti-10%Ca 3 (PO 4 ) 2 powder mixtures is investigated. The Ti-Ti 3 P-CaO ceramic electrode materials with a high uniformity of components and residual porosity of 5-7% are fabricated according to the pressing and vacuum sintering technology. The erosion ability of the Ti-Ti 3 P-CaO metal-ceramic electrode under the pulsed electric-discharge machining of titanium substrates is investigated and compared with the TiC 0,5 -Ti 3 PO x -CaO electrodes fabricated by self-propagating high-temperature synthesis. Coatings fabricated when using Ti-Ti 3 P-CaO and TiC 0,5 -Ti 3 PO x -CaO electrodes are characterized by high continuity, thickness up to 20 μm, microhardness up to 3,6 GPa, roughness to 3,3-4,6 μm, and the presence and uniform distribution of calcium and phosphorus bioactive elements.Keywords: pulsed electric-discharge machining, planetary ball mill, sintering, bioactive coating, ceramics.

show abstract

Electro-spark alloying using graphite electrode on titanium alloy surface for biomedical applications

Cited by 104 publications

References 27 publications

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Surface modification of an austenitic stainless steel wire by a multi-pulse treatment with a high-power electric current

Peculiarities of formation of sintered electrodes of the Ti–Ti3P–CaO composition and their application in technology of pulsed electric-discharge machining of titanium

Contact Info

Product

Resources

About